DockSide Bumpers provide excellent heavy-impact protection as well as outstanding protection to boat gunnels. Made of rugged, air-filled, heavy-walled molded PVC with integral inflation valve. Designed with angled ends to deflect craft. Pairs of straight bumpers can also be used to form inside corners. Mounting hardware not included. 12" x 12", 7"H x 7-1/2"D.